State television said the
fighting resumed Thursday outside a police station in El-Arish, about 50
kilometers from the border with Israel and the Gaza Strip.
There were no immediate reports of casualties.
Egyptian President Mohamed Morsi fired his intelligence chief and the governor
of North Sinai on Wednesday in a major reorganisation.
Reportedly, the military has said
it carried out its operation Wednesday to restore peace and regain control
after an increase in lawlessness following the ouster of former president Hosni
Mubarak.
Militants launched a bloody attack on the army Sunday, killing 16 Egyptian
border guards.
Notably, the clash came a day
after military airstrikes killed 20 suspected militants in the area.